/**
 * Copyright (C) 2008-2010 Matt Gumbley, DevZendo.org <http://devzendo.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.devzendo.minimiser.upgradedetector;

import org.devzendo.commoncode.patterns.observer.Observer;

/**
 * Allows tests to check UpgradeEvents
 * 
 * @author matt
 *
 */
public final class StubRecordingUpgradeListener implements Observer<UpgradeEvent> {

    private UpgradeEvent observedEvent = null;

    /**
     * {@inheritDoc}
     */
    public void eventOccurred(final UpgradeEvent observableEvent) {
        this.observedEvent = observableEvent;
    }

    /**
     * @return the observed event, or null if nothing was observed
     */
    public UpgradeEvent getObservedEvent() {
        return observedEvent;
    }
}
